If one of these trash cans is shaking, a Pokémon or an item can be found inside it.

The trash can west of the Punk Couple will contain a Pokémon or item every day, while the remaining four trash cans may only contain a Pokémon or item once a week (on Tuesdays). On Tuesdays, only three of those four trash cans will shake, while the last will remain empty. Both types of trash cans also contain different Pokémon and items (meaning, even on Tuesdays, the daily trash can will contain the same types of Pokémon and items as it does every other day).

There are five trash cans among the field of yellow flowers in Pokémon Village. Their locations are:

Three along the south edge of the village, ranging between the tire and the river

One west of the tire

One northwest of the empty western canopy

If one of these trash cans is shaking, a Pokémon or an item can be found inside it.

The middle trash can along the south edge of the village will contain a Pokémon or item every day, while the remaining four trash cans may only contain a Pokémon or item once a week (on Thursdays). On Thursdays, only three of those four trash cans will shake, while the last will remain empty. Both types of trash cans also contain different Pokémon and items. This means that, even on Thursdays, the daily trash can will contain the same types of Pokémon and items as it does every other day.

In both locations, a trash can will not shake again for the rest of the day after a Pokémon or item has been found inside. The contents of trash cans are generated upon interaction, so soft resetting may yield different Pokémon or items.

Dirt clouds

In Sun, Moon, Ultra Sun, and Ultra Moon, certain locations have walls with holes in them, with dirt clouds coming out of the holes. If the players touches one of the dirt clouds, a wild Pokémon will attack.

Vast Poni Canyon

This is a special kind of flying shadow ambush encounter that only happens during the trial in Vast Poni Canyon in Sun, Moon, Ultra Sun, and Ultra Moon. During the trial, while walking through the cave, the player is attacked by a Jangmo-o and a Hakamo-o.

Chase

In certain locations of Sun, Moon, Ultra Sun, and Ultra Moon, there are walls with holes in them. Sometimes, a Wimpod will come out from one of the holes and go to another one. If the player touches it, the Wimpod will attack.

Sand clouds

In certain locations of Sun, Moon, Ultra Sun, and Ultra Moon, there are small shadows in the sand. In Hano Beach, they are stationary, while in Haina Desert, they chase the player. If the player touches a shadow in the sand, a wild Pokémon will attack.